Thaumastocoris

Noack, Ann E., Cassis, Gerasimos & Rose, Harley A., 2011, Systematic revision of Thaumastocoris Kirkaldy (Hemiptera: Heteroptera: Thaumastocoridae), Zootaxa 3121, pp. 1-60 : 24-25

Key to species of Thaumastocoris

1 Forecoxae inserted at a distance less than coxal width ( Figure 15 B); pronotum weakly constricted medially ( Figure 15 D); pronotal disc broader than callosite region ( Fig 15 D)........................................................... 2

- Forecoxae inserted at distance equal to or more than coxal width ( Figure 10 B; 11B; 12B; 13B; 17B); pronotum weakly to

strongly constricted medially ( Figure 10 D; 11A; 12D; 13A; 14D; 16E; 17D); pronotal disc equal to or broader than callosite region ( Figure 10 D; 11A; 12D; 13A;14D;16E;17D)......................................................... 3 2 Labium short, reaching anterior margin of prosternum ( Figure 15 B); eyes weakly pedicellate ( Figure 7 C,D; 15A,D); forecoxae subcontiguous ( Figure 15 B); prosternum bipartite ( Figure 15 B)............................................ T. petilus

- Labium long, reaching submarginal posterior prosternum; eyes strongly pedicellate ( Figure 4 C,D; 8A,B); forecoxae separated by more than half coxal width; prosternum undivided........................................................ 4

3 Pronotum with distinctive tubercle on anterolateral margin of callosite region ( Figure 8 C,D; 9A,B; 16E; 17D)............ 5

- Pronotum tuberculate ( Figure 10 D; 13A; 14D) to rounded ( Figure 11 A; 12D) but never with distinctive tubercle on anterolateral margin of callosite region............................................................................ 6

4 Small species, males 2.37–2.41 mm, females 2.57–2.69 mm; antennae mostly light brown; AII with subapical dark annulations; subapical third AIII and apical two-thirds AIV dark brown to fuscous ( Figure 8 A,B); abdominal venter dark brown; paramere with broad medial keel ( Figure 19 D).......................................................... T. roy

- Large species, males 2.96–3.24 mm, females 3.24–3.36 mm; antennae mostly straw-coloured; apical half of AIII and all but sub basal ring of AIV dark brown to fuscous ( Figure 4 C,D); abdominal venter yellowish brown; paramere with apical hornlike projection ( Figure 18 E,F)........................................................................ T. hackeri

5 Small species, males 2.41–2.65 mm, females 2.41–2.69 mm; abdomen narrow, lateral margins subparallel, barely visible from above ( Figure 8 C,D); pygophoral lock short, invaginated basally, strongly concave apically ( Figure 16 G; 19E).... T. safordi

- Large species, males 3.08–3.20 mm, females 2.96–3.16 mm; abdomen expanded laterally, distinctly evident from above (Figure 9A,B); pygophoral lock elongated, weakly concave apically ( Figure 17 G; 19F)........................... T. slateri

6 Distinctive tubercle posteroventrally on propleuron ( Figure 10 B,E); abdominal venter strongly expanded ( Figure 3 C,D); pronotum strongly constricted medially ( Figure 3 C,D; 10D)................................................ T. busso

- Posteroventral angle of propleura without tubercle ( Figure 11 B; 12B; 13B); abdominal venter either expanded or narrow; pronotum weakly to strongly constricted medially ( Figure 11 A; 13A).............................................. 7

7 Mandibular plates strongly recurved laterally ( Figure 6 A,B; 7A,B; 13A; 14A); bucculae strongly explanate, margins thickened, reniform posteriorly ( Figure 13 B; 14B).............................................................. 8

- Mandibular plates weakly to strongly recurved ( Figure 11 A; 12A); bucculae margin thin to weakly explanate, not thickened or reniform posteriorly ( Figure 11 B; 12B)................................................................... 9

8 Apex of pygophoral lock acute ( Figure 19 A); AIII yellowish brown ( Figure 6 A,B); female pronotal disc fuscous ( Figure 6 B), sexually dimorphic............................................................................. T. nadeli

- Apex of pygophoral blunt ( Figure 19 B); AIII subapically light brown; ( Figure 7 A,B); female pronotal disc cream-coloured ( Figure 7 B), male concolorous ( Figure 6 A)....................................................... T. peregrinus

9 Labium elongate, reaching just beyond midpoint of forecoxae; medial margin of corium convex; apex of corium at membrane blunt, medial margin more than 45° to costal margin ( Figure 5 A; 5B)........................................... 10

- Labium short to moderately long, not reaching beyond midpoint of forecoxae ( Figure 11 B; 12B); medial margin of corium straight to excavate ( Figure 11 F); apex of corium at membrane weakly to strongly narrowed, never blunt medial margin less than 45° to costal margin ( Figure 3 A,B; 5C,D; 6C,D)....................................................... 11

10 Body elongate, costal margins subparallel; dorsum yellowish brown; hemelytra extending to T8; eyes strongly pedicellate; abdomen strongly expanded laterally, visible beyond costal margins from above ( Figure 5 B).................. T. kalaako

- Body ovoid; dorsum dark brown; hemelytra covering abdomen; eyes moderately pedicellate; abdomen not expanded laterally, barely visible beyond costal margins from above ( Figure 5 A)......................................... T. macqueeni

11 Labium very short, not reaching beyond anterior margin of prosternum; prosternum distinctly swollen, truncate anteriomedially....................................................................................... T. australicus

- Labium reaching beyond anterior margin of prosternum ( Figure 11 B; 12B); prosternum flat to weakly swollen, not distinctly swollen............................................................................................ 12

12 Prosternum weakly swollen anteriorly ( Figure 12 B); pygophoral lock elongate, weakly concave medially, with a subapical notch; paramere securiform, elongate, weakly spatulate distally ( Figure 18 D)................................ T. majeri

- Prosternum weakly excavate anteriorly ( Figure 11 B); pygophoral lock weakly trapezoidal ( Figure 18 C,G,H), apices variously expanded or pointed, without notches ( Figure 18 D); paramere subrectangular or elongate, recurved or distinctly spatulate apically ( Figure 18 C,G,H)................................................................................ 13

13 Dorsum yellowish brown with contrasting dark brown to fuscous markings ( Figure 6 C,D); labium not reaching anterior margin of forecoxae; pygophoral lock trapezoidal, apices flared and rounded; paramere elongate, spatulate apically ( Figure 18 G,H)............................................................................................ T. ohallorani

- Dorsum light golden to yellowish brown with contrasting cream to light brown markings ( Figure 4 A,B); labium reaching anterior margin of forecoxae ( Figure 11 B); pygophoral lock moderately elongate, weakly trapezoidal, apices strongly flared, medial angles weakly pointed; paramere subrectangular, basal angle recurved ( Figure 18 C)............... T. freomooreae

Figures

FIGURE 3. Habitus, dorsal view. A and B Thaumastocoris australicus. C and D Thaumastocoris busso. Scale bar = 1 mm.

FIGURE 4. Habitus, dorsal view. A and B Thaumastocoris freomooreae. C and D Thaumastocoris hackeri. Scale bar = 1 mm.

FIGURE 5. Habitus, dorsal view. A Thaumastocoris macqueeni. B Thaumastocoris kalaako. C and D Thaumastocoris majeri. Scale bar = 1 mm.

FIGURE 6. Habitus, dorsal view. A and B Thaumastocoris nadeli. C and D Thaumastocoris ohallorani. Scale bar = 1 mm.

FIGURE 7. Habitus, dorsal view. A and B Thaumastocoris peregrinus. C and D Thaumastocoris petilus. Scale bar = 1 mm.

FIGURE 8. Habitus, dorsal view. A and B Thaumastocoris roy. C and D Thaumastocoris safordi. Scale bar = 1 mm.

FIGURE 10. Scanning electron micrographs: Thaumastocoris busso. A 3 head, dorsal view. B 3 head and prosternum, ventral view. C 3 antenna, dorsal view. D 3 pronotum, dorsal view. E 3 head and propleura, lateral view. F 3 thorax, lateral view. G 3 genitalia, ventral view. H Ƥ genitalia, ventral view. b = bucculae, c = clypeus, I = labium, me = mesopleuron, mp = mandibular plate, mt = metapleuron, p = paramere, pI = propleuron, ps = prosterna, py = pygophore, pyl = pygophoral lock, t = tubercle. Scale bar = 0.1 mm.

FIGURE 11. Scanning electron micrographs: Thaumastocoris freomooreae. A 3 head and pronotum, dorsal view. B 3 head and prosternum, ventral view. C 3 antenna, dorsal view. D 3 head and propleura, lateral view. E 3 thorax, lateral view. F 3 hemelytra, dorsal view. G 3 genitalia, ventral view. H Ƥ genitalia, ventral view. Scale bar = 0.1 mm.

FIGURE 12. Scanning electron micrographs: Thaumastocoris majeri. A Ƥ head, dorsal view. B Ƥ head and prosternum, ventral view. C Ƥ antenna, dorsal view. D Ƥ head and pronotum, dorsal view. E Ƥ head and thorax, lateral view. F Ƥ foretarsus, lateral view. G Ƥ tarsal claw, anterolateral view. H Ƥ genitalia, ventral view. cl = claw, fs = fossula spongiosa, tc = tibial comb, tii = second tarsomere. Scale bar = 0.1 mm except for G scale bar = 0.01 mm.

FIGURE 13. Scanning electron micrographs: Thaumastocoris nadeli. A 3 head and pronotum, dorsal view. B 3 head and pro sternum, ventral view. C 3 antenna, dorsal view. D 3 head and propleura, lateral view. E 3 thorax, lateral view. F 3 midtarsus, lateral view. G 3 genitalia, ventral view. H Ƥ genitalia, ventral view. tt = tibial tooth. Scale bar = 0.1 mm.

FIGURE 15. Scanning electron micrographs: Thaumastocoris petilus. A 3 head, dorsal view. B 3 head and prosternum, ventral view. C 3 antenna, dorsal view. D 3 head and pronotum, dorsal view. E 3 thorax, lateral view. F 3 Hemelytra, dorsal view. G 3 genitalia, ventral view. H Ƥ genitalia, ventral view. Scale bar = 0.1 mm.

FIGURE 16. Scanning electron micrographs: Thaumastocoris safordi. A 3 head, dorsal view. B 3 head, ventral view. C 3 head, lateral view. D 3 antenna, lateral view. E 3 pronotum, dorsal view. F 3 thorax, lateral view. G 3 genitalia, ventral view. H Ƥ genitalia, ventral view. t = tubercle. Scale bar = 0.1 mm.

FIGURE 17. Scanning electron micrographs: Thaumastocoris slateri. A 3 head, dorsal view. B 3 head and prosternum, ventral view. C 3 antenna, lateral view. D 3 pronotum, dorsal view. E 3 thorax, lateral view. F 3 foretarsus, lateral view. G 3 genitalia, ventral view. H Ƥ genitalia, ventral view. t = tubercle. Scale bar = 0.1 mm.

FIGURE 18. Male genitalia. A. Thaumastocoris australicus, ventral view B. Thaumastocoris busso, ventral view C. Thaumastocoris freomooreae, ventral view D. Thaumastocoris majeri, ventral view E. Thaumastocoris hackeri, ventral view F. Thaumastocoris hackeri, dorsal view G. Thaumastocoris ohallorani, ventral view H. Thaumastocoris ohallorani, dorsal view. Scale bar = 0.1 mm.

FIGURE 19. Male genitalia. A. Thaumastocoris nadeli, ventral view. B. Thaumastocoris peregrinus, ventral view C. Thaumastocoris petilus, ventral view D. Thaumastocoris roy, ventral view E. Thaumastocoris safordi, ventral view F. Thaumastocoris slateri, ventral view. Scale bar = 0.1 mm.